Lubricator for engine-cylinders.



N6. 657,643. Patented sept. |900. s. A. BunwELL. LUBRITFIV FR ENGINE CYLINDERS.

(Applction filed Tune 15, 1899.)

G'ealye dzofwell.

A TTUHNE Y.

UNr'rED STATES FATENT FFICE.

GEORGE A. BURWELL, OF TOLEDO, OHIO.

LUBRICATOR FOR ENGINE-CYLINDER'S.

SPECIFICATION forming part of Letters Patent No. 657,643, dated September 1v1, 190'0.

Application filed June 15, 1899. Serial No. 720.734. (No model-l To all whom, it may concern,.-

Be it known that l, GEORGE A. BURWELL, a` citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Lubricators forEngine-Cylinders, of which the following is a specification, that will enable those skilled in the art to which my invention pertains to make and use the same.

My invention relates to a forced-feed lubricator by which the oil is injected or sprayed into the cylinder and onto the pist-on by the pressure of the gas, steam, air, or other expansive medium employed to drive the engine. It is specially designed for use on caloric or explosive air or gas engines; but it is also applicable to steam-engines,on which it works with much greater efficiency and economy of the lubricant 'than the devices now in ordinary use for this purpose.

The accompanying drawings show my invention in the best form now known to me; but certain changes in the details of construction and the relative arrangement of the parts might be made therein within the skill of a good mechanic and not requiring the exercise of invention Without departing from the spirit of my invention as set forth in the claims at the end of this specication.

Figure l is a side elevation of a gas-engine cylinder, partly in section, with my improved lubricator applied thereto and shown in full vertical section. Fig. 2 is a perspective section of a portion of the base of my lu bricator. Fig. 3 is a View, partly in elevation and partly in section, of the feed-regulator and the fillingtube leading to the reservoir. Fig. 4 is a similar view of the screw-nipple at the bottoni of the reservoir. Fig. 5 is asimilar View of the drip cup or nipple at the bottom of the sight-chamber. Fig. 6 is a cross-section of the screwed stem of this cup on the line X X of Fig. 5, and Fig. 7 is a bottom plan view of the drip-cup.

In the drawings I have shown my lubricatoras applied to the cylinder a of a gas-engine, surrounded by a water-jacket b and having a piston c, which is shown at or near the end of its stroke and below the exhaust-port d. The piston is provided with the usual expansive-spring packing-rings e. The cylinder has two openings f and g extending across the Water-space and through the ou ter jacket. The upper or pressure openingf is preferably so located that the exhaustport will be partially opened and the pressure in the cylinder reduced to the desired extent before the pressure-opening is uncovered, and thereby exposed to the pressure within the cylinder. The lower or outlet opening g is located so as to be about opposite the piston-rings e e when the pressure-opening is uncovered.

My lubricator is formed with a baseh,\vl1ich is secured to the face of the cylinder by screws and which is provided with a horizontal bored recess or chamberfi in line with the pressureopeningfand with an outlet-channelj, leading from said chamber to the outlet-opening g in the side of the cylinder. A rod 7c is located in the chamber z' and is provided with a piston and a guide which snugly t within the bore of the chamber. The piston is plain, while the guide is formed with a series of notches or grooves extending across its face to permit the continuous passage of the oil to the space between the piston and guide, from whence it passes into the channel j when the piston is in the position shown in Fig. 1, to which position it is urged by the spring Z, located between the guide and the inner end of the chamber. Preferably the bore of the chamber is slightly larger than the diameter of the passagef, so that the piston is stopped against the abutment m when thrust forward by the spring.

The oil-reservoir n and the sight-chamber 0 below it are preferably cast in one piece and screwed into the projecting end of that portion of the base containing the chamber or recess fi. The sides. of the sight-chamber o may be left open or glazed, as shown at p, if desired. The upper end of the reservoir is open and tapped for the reception of the screw-threads q on the tubular portion fr of the feed-regulator stem. This tubular portion is closed at its bottom and has a side opening s, through which oil poured into the upper end of the tube may flow out into the reservoir. A sti wire stem t extends from the tubular portion of the regulator and carries at its lower end a pointed bulb u, which projects into the openingo, leading from the reservoir. The upper end of the tubular por- IOO crease the size of the opening around the.

bulb u. A Washer surrounds the tube and rests against the fiat top surface ofY the resby a spring y, also surrounding the tube and bearing against the'under side of the milled g ange. The opening from the bottom of the reservoir is formed in a nipple z, 'screwed into place from the 'open sight-chamber 'and'A provided with a tapering nozzlel, through which is a small hole to peri'nit of the dfropby-drop feed of the oil. A drip cup or nipple-2 is screwed into the apeiture 'between the sight-cha'r'nbeil and the plniger-cha'inlei The central recess or dpening t' in the base. g p l 3 in the top' of this drip-*chip is loca'tied directly beneath the nozzle 1 i's rounded or flaring, soas tocafchall'the drops from the half-Way down the length of tHe cfp, vvleife:

itcommunicates with crossapertnreshwhich extend through th'e'WallS of thecnpan'd le'n into vertical grooves 5, cii't linto the' enter' screw-threaded su r'fac'l'e'of the neckfoffthecnp.

These grooves ar'efdleeper than die' screw:

cfor the rop: of weesp. -B'y this oon-sanction any oil forced back or up the grooves by prSS'le Of the' Steam (jr 'gals' frin the@UL 1? oponingsi and coiiootedfin 15h-e space eender do'vvn the grooveswhen tliegaso passes di'op by drop intoth'e'b'ack end of the chamber t' and 'finds its Way through 'the' grooves in the guide to the"clran"iiel'in it accumulatesin suiicientquantity. Whe-11Tv the engine-piston again comes do'wn after an Il f, the expanding gases oirsteam'rush into-this opening, driving theip's-t'on on the rddback explosion and uncoversthelpressurelope to the position shown in Fig. 2,*expos'i`ngft'he tending to spray the oil. YItiiviljl thu'sfbes n than an of the'oil lpassing into tho' oyiind method non( generally in-iis'e, ii1 which thei on is injected into the steam-pipo ioding'to the cylinder and commingles with the steani which vis 7the' agent for the distribution of the oil to the wearingsurfaces. As only a minute portion of the oil-charged steam comes into contact with these surfaces and then d l. *1d 1 mi! nth Ffh rushes o through the exhaust, carrying erven-an is 1e' moose cov ac `ere 1;

avifay'the balance o'f the oil still in suspension, it follows that of all the oil that enters la steam-cylinder under this method of lubrication only a very small per cent. can be eectually lodged upon the Wearing-surfaces, the balance going to Wasteout of th'e'exh'austport. IBythe use of my device all the oil is projected 'directly against the Wearing-surL faces and an enormous saving effected over the old method.

Inthie construction of rny device I 'use a pistonianfd "a gideo'n 'the rod k in the chainher t; hlut t-he 'guide Amight bedispen'se'd with and' otlfei" suitable Well-known means for liold'ing 'thei'ninlerendof the rod 7c' in alineifnintbe'er'lployed in itssteaid. The piston, however, which reciprocate's across the openof :the channel, is an essential and i'ndispensable feature of the invention.

Having thus described my invention, Wh at I claim as nieiv and useful is 1". ln a lu'brricator, ra pressure-opening and an outlet-channel, means for supp-lyingoi'l to th'- ontietciiannehand inoval'ilev mea'ns `alternately cl'osing the oil-:supply and themes-- '2. In va 'linbricato'ig the combination of a f l y chamfbe'r 'provided with a pressurelopening the h'ead of the cup', from Whenceitivill- Howl i the'chanherfr closing said pressure-openj; channelLleadi'ngfom thevcha'm-ber, me'ans'for i delhi' i chalnbeigand nievablejiii'ea'ns initlre chamber y reciprocating' across t'he mouth of Vthe outletentrance to the outlet-chaniielj'dofvn'viflihv` the gases rush and'fo'rce ont the' accumulated. l lubricant against the surfaces of the engine-'lf piston and its rings, the rtishof tlegl'isesz ,rin-g a regulated supply of oil to the 2 chamber f-p'oyded with a pressure-opening projected directly'against the Wearing=surfaces, Where it is needed, 'andthattfhi'seciiiis'. in gas-engines aft-'er each'explo'sien stokefofj the engine-piston, so that vvs'reandthoroughf lubrication' ris effected with no waste f ina-te and aneutletf-jc'hannel, ineans for supplying oil fo the ou'rlet-cliannel, and movable means in the chamber for alternatelyelosing the letlcliannel communicating-directly with the oil-supply when the pressure-opening is closed and with said pressure-opening when the ilisupply is closed, substantially as described.

V5. The combination with a cylinder and its IIO esmalte piston, of a lubricator provided with a pressure-channel communicating with said cylinder and alternately covered and uncovered by said piston, an outlet-channel communicating with said cylinder, means fordelivering a regulated supply of oil to said outletchannel, and means for closing said oil-sup* ply and establishing direct communication between said channels when the pressurechannel is uncovered, so as to exert pressure through said outlet-channel, substantially as described.

6. The combination with a cylinder and its moving piston, of a lubricator provided with a pressure-opening and an outlet-channel, each communicating directly with the cylinder, means for supplying; oil to said outletchannel, and means for closing said oil-supply and permitting pressure to be exerted in the ou tlet-channel through the pressure-opening when said outlet-channel is covered by the piston, substantially as described.

7. The combination with a cylinder and its piston, of a lubricator provided with a pressure-opening and an outlet-channel, each communicating with said cylinder, and being alternately covered and uncovered by the piston, means for supplying oil to said outletchannel, and means for closing said oil-snpply and establishing direct communication between said channels when the outlet-channel is covered and the pressure-channel is uncovered by said piston, substantially as described. Y

8. The combination of a cylinder provided with two apertures through its side and its moving piston, a lubricating device attached to the cylinder, a chamber-in said device opening into one of said apertures and a channel leading from the chamber to the other aperture, a piston adapted to reciprocate in the chamber and a spring to press the piston to a position between the channel-mouth and the aperture leading into the cylinder, when both of said apertures are uncovered by the engin e-cylinder with a means for delivering a regulated supply of oil into the chamber behind the piston.

9. The combination of a cylinder and its moving piston, said cylinder being provided with an exhaust-port near its end and two apertures through its side the inner one of said apertures being located at or near the plane of the outer edge of the exhaust-port and the other nearer to the end of the cylinder, a lubricating device attached to the cylinder, a chamber in said device opening into the inner aperture of the cylinder and a channel leading from the chamber to the other aperture of the cylinder a piston adapted to reciprocate in said chamber and a spring to press the piston to a position between themouth of the channel and the aperture leading into the cylinder, with means fordelivering a regulated supply of oil into the chamber behind the piston.

10. In a lubricating device the combination of the chamber t', a piston-rod provided with a piston and a guide fit-ting the bore of the chamber, said guide having a series of grooves or notches across its periphery, a spring between said guide and the end of the chamber and the channel communicating with the chamber at a point between the piston and the guide when in their normal position, with means for delivering a regulated supply of oil into the chamber behind the guide.

1l. In combination with a cylinder provided with two apertures through its side, a lubricating device having a chamber communieating with one of said apertures, a channel leading from the chamber to the other aperture, a spring-pressed piston adapted to reciprocate in said chamber across the mouth of the channel with a drip-cup fitting in an aperture leading into the chamber and having a closed recess under its head or top, vertical side grooves in the shank of the cup leading to said recess, a central cavity in the upper end of the cup and horizontal passages leading from the bottom of this cavity to the side grooves substantially as set forth.

12. In a lubricator the combination of the chamber t', and a channel leading therefrom, a piston adapted to reciprocate in said chamber, a drip-cup screwed into the top of the chamber behind the piston, the head or flange of the cup being undercut and fitting at its edge against the surface of the part into which the cup is screwed forming a 'closed recess, vertical side grooves in the screwed shank of the cup leading into said closed recess, a central cavity having a flaring mouth at the top of the cup and horizontal passages leading from the bottom of this cavity to the vertical side grooves substantially as set forth.

13. In a lubricator the combination of the reservoir and the sight-cham ber below the reservoir with the feed-passage connecting them, the drip-cup with central Haring cavity located below the feed-passage and provided with transverse passages and vertical side grooves as described with means for regulating the size of the opening leading from the reservoir substantially as described.

In testimony whereof I affix my signature, in the presence of two witnesses, at Toledo, Ohio, May 26, 1899.

GEORGE A. BURWELL.

Witnesses:

P. H. GooDALL, H. S. LEEPMAN.

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